linux-kernel - [PATCH v2 10/14] dma: edma: Simplify direction configuration in edma_config

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Date:	Tue, 1 Apr 2014 16:06:11 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<dan.j.williams@...el.com>, <vinod.koul@...el.com>,
	<nsekhar@...com>
CC:	<dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<joelf@...com>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-omap@...r.kernel.org>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<mporter@...aro.org>
Subject: [PATCH v2 10/14] dma: edma: Simplify direction configuration in edma_config_pset()

We only support DEV_TO_MEM or MEM_TO_DEV directions with edma driver and the
check for the direction has been already done in the function calling
edma_config_pset().
The error reporting is redundant and also the "else if ()" can be removed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 drivers/dma/edma.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 855766672aa9..d954099650ae 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -372,14 +372,12 @@ static int edma_config_pset(struct dma_chan *chan, struct edmacc_param *pset,
 		src_cidx = cidx;
 		dst_bidx = 0;
 		dst_cidx = 0;
-	} else if (direction == DMA_DEV_TO_MEM)  {
+	} else {
+		/* DMA_DEV_TO_MEM */
 		src_bidx = 0;
 		src_cidx = 0;
 		dst_bidx = acnt;
 		dst_cidx = cidx;
-	} else {
-		dev_err(dev, "%s: direction not implemented yet\n", __func__);
-		return -EINVAL;
 	}
 
 	pset->opt = EDMA_TCC(EDMA_CHAN_SLOT(echan->ch_num));
-- 
1.9.1

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